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Subject: Re: Cloned Chess Engines

Author: Dann Corbit

Date: 18:59:42 05/05/05

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On May 05, 2005 at 21:52:42, Dave Potesta wrote:

>I've been reading the Fruity thread and it mentioned Ruffian as being involved
>in some scandal.  I searched on Google for "Ruffian Clone" and I found quite a
>few links on other engines that are clones.  By far, Crafty seemed to have been
>cloned the most.

No way.  TSCP is the most, followed by Faile.  GnuChess is in the vicinity.  SCP
has lots of clones as does Crafty.

>I always assumed that all the engines out there were original,
>I guess not.  Most don't even say it.
>   I guess the Chess Programmer world is even smaller than I once thought.
>
> Which engines are clones?

All of them in one sense -- the ideas are all borrowed from others.  The amount
of stuff that's truly original in any chess engine is probably about 5% on
average.

As far as cutting and pasting of code or even taking a complete program and
stamping your name on it ... That's a lot harder to figure out.



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